package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import javax.websocket.server.PathParam;
import java.nio.charset.StandardCharsets;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {
    @Autowired
    private EmployeeService employeeService;

    //员工登录

    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee){
        //①. 将页面提交的密码password进行md5加密处理, 得到加密后的字符串
        String password = employee.getPassword();
        password=DigestUtils.md5DigestAsHex(password.getBytes());

        //②. 根据页面提交的用户名username查询数据库中员工数据信息
        LambdaQueryWrapper<Employee> lqw = new LambdaQueryWrapper<>();
        lqw.eq(Employee::getUsername,employee.getUsername());
        Employee emp = employeeService.getOne(lqw);

        //③. 如果没有查询到, 则返回登录失败结果
        if (emp==null){
            return R.error("登陆失败");
        }
        //④. 密码比对，如果不一致, 则返回登录失败结果
        if (!password.equals(emp.getPassword())){
                 return R.error("登陆失败");
        }
        //⑤. 查看员工状态，如果为已禁用状态，则返回员工已禁用结果
        if (emp.getStatus()==0){
            return R.error("员工已禁用");
        }
        //⑥. 登录成功，将员工id存入Session, 并返回登录成功结果
        request.getSession().setAttribute("employee",emp.getId());
        return R.success(emp);
    }
    //退出
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request){
        //清理Session中保存的当前登录员工的id
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }
    //新增员工
    @PostMapping
    public R<String> addEmp(HttpServletRequest request,@RequestBody Employee employee ){
        log.info("新郑员工:{}",employee.toString());
        //设置初始密码123456 但是要进行MD5加密
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
     /*   employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());*/
        //谁创建的此员工
      /*  Long empid = (Long) request.getSession().getAttribute("employee");
        employee.setUpdateUser(empid);
        employee.setCreateUser(empid);*/

        employeeService.save(employee);
        return R.success("新郑员工成功");
    }

    /**
     * 分页查询
     */
    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,@PathParam("username") String name){
        log.info("page={},pageSize={},name={}",page,pageSize,name);
        //构造分页构造器
        Page pageinfo = new Page(page,pageSize);
        //构造条件构造器
        LambdaQueryWrapper<Employee> lqw = new LambdaQueryWrapper<>();

        lqw.like(StringUtils.isNotEmpty(name),Employee::getName,name)
           .orderByDesc(Employee::getUpdateTime);
        //执行查询
        employeeService.page(pageinfo,lqw);
        return R.success(pageinfo);
    }



    /*
   根据id查询员工信息----查
    */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
        log.info("根据id查询员工的信息...");
        Employee employee = employeeService.getById(id);
        if (employee!=null){
            return R.success(employee);
        }
        return R.error("没有查询到员工信息");
    }

    /*
    编辑员工信息----改
     */
    @PutMapping
    public R<String> update(HttpServletRequest request,@RequestBody Employee employee){
        log.info(employee.toString());

       /* Long empId = (Long) request.getSession().getAttribute("employee");
       employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(empId);*/

        employeeService.updateById(employee);
        return R.success("员工修改成功");
    }



}
